Sony MHC-W770AV / STR-W770 Service Manual ▷ View online
– 31 –
3-10. IC BLOCK DIAGRAMS
IC3001 LA2786
IC3000 LV1016
1
2
3
4
5
6
7
8
9
15
10
11
12
–
+
13
14
16
21
18
19
25
17
24
22
23
20
34
32
33
29
30
35
28
31
27
26
36
40
39
38
37
41
42
NOISE
FILTER
NOISE
CH
BALANCE
CONTROL
VR
CONTROL
LPF
V REF
VR
VR
NOISE
GENERATOR
VCA
VCA
VCA
VCA
VCA
VCA
VCA
VCA
LPF
LPF
RECT
RECT
RECT
RECT
P. S.
P. S.
CMODE
MUTE
DIVIDER
OSC
CONTROL
CTRIM
LOG
DIFF
LOG
DIFF
DUAL T
CONTROL
L-IN
R-IN
V
SS
CLK
DATA
V
CC
L-OUT
R-OUT
S-OUT
C-OUT
ENABLE
OSC1
CMODE-CAP.
C-TRIM DC CUT
R-BPF1
R-BPF2
R-BPF3
DC CUT
DC CUT
L-R RECT
L+R RECT
VCS-TH
VCS-1
VCS-2
BPF1
BPF2
VREF
S-CH DC OUT
C-CH DC OUT
L-CH DC OUT
R-CH DC OUT
VREF
L-BPF1
L-BPF2
L-BPF3
DC CUT
DC CUT
R RECT
L RECT
VLR-TH
VLR-1
VLR-2
1
5
6
+
–
+
20
19
18
17
16
15
14
13
21
22
23
24
2
3
4
7
8
9
10
12
11
+
DEC
IN-FILTER
(40kHz)
VDD
ADM-CONT
SRAM
ADM
OUT-FILTER
(7k/5k)
B-NR
DC-OUT
VOL/MUTE
S-TRIM
INV-PHASE
R+DELAY
L+DELAY
A
B
A
B
A
B
A
B
A
B
A
B
A
B
L–R
L+R
(–6dB)
A
B
A.GND
L-OUT
R-OUT
VREF
S-OUT
DELAY-OUT
S-IN
R-IN
L-IN
VCC
NR-DET
ENABLE
DATA
CLK
D.GND
DC-CUT
VDD
OSC
OSC
NR-IREF
DC-CUT
– 32 –
1
2
3
4
5
6
7
8
OVER LOAD DET
F/F
OFFSET DET
LATCH/
AUTORESET
V
CC
ON
MUTE
AC OFF
DET
V
CC
IC850
µPC1237HA
+
–
+
–
–
+
–
+
–
+
–
–
+
–
+
–
–
SBAND GRAPHIC EQUALIZER
SBAND GRAPHIC EQUALIZER
U-CON
INTER
FACE
INTER
FACE
+
–
+
–
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
21
22
23
24
64
63
62
61
60
59
58
57
56
55
45
46
47
48
49
50
51
52
53
54
44
43
42
41
25
26
27
28
29
30
31
32
33
34
40
39
38
37
36
35
80
79
78
77
76
75
74
73
72
71
65
66
67
68
69
70
KEY OUT1
NC3
REC 1A
REC 1B
REC 1C
NC4
F1 F1
F1 O1
F1 IN1
F2 F1
F2 O1
F2 IN1
F3 F1
F3 O1
F3 IN1
F4 F1
F4 O1
F4 IN1
F5 F1
F OUT1
VOL OUT1
VOL IN1
BBIN1
BB11
BB12
BBIN2
VOL OUT2
VOL IN2
F OUT2
F5 F2
F4 IN2
F4 O2
F4 F2
F3 IN2
F3 O2
F3 F2
F2 IN2
F2 O2
F2 F2
F1 IN2
F1 O2
F1 F2
NC6
REC 2C
REC 2B
REC 2A
NC7
KEY OUT2
BB22
BUF IN1
BUF OUT1
NC5
AVDD
DGND
LATCH
DATA
CLOCK
DVDD
PORT C
PORT B
PORT A
BUFOUT1
BUFIN1
BB21
KEY IN1
DELAY OUT
DELAY IN
NC2
IN 1B
NC1
IN 1A
AGND
AVSS
IN 2A
NC9
IN 2B
NC8
BPF IN
BPF OUT
KEY IN2
IC105
M62427FP-A
SECTION 4
EXPLODED VIEWS
Note:
•
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences from the original one.
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
•
The mechanical parts with no reference number
in the exploded views are not supplied.
in the exploded views are not supplied.
•
Abbreviations
TH
TH
: Thai
SP
: Singapore
HK : Hong Kong
EA
: Saudi Arabia
AUS : Australian
MY : Malaysia
The components identified by mark
!
or
dotted line with mark
!
are critical for safety.
Replace only with part number specified.
— 33 —
4-1.
MAIN SECTION
1
3-363-099-11 SCREW (CASE 3 TP2)
* 2
4-991-364-11 CASE
* 3
1-666-059-11 SEC BOARD
* 4
1-666-069-11 PRI BOARD
* 5
A-4398-466-A SURROUND AMP BOARD, COMPLETE
(EXCEPT TH)
* 5
A-4403-217-A SURROUND AMP BOARD, COMPLETE (TH)
6
1-233-545-21 ENCAPSULATED COMPONENT (AUS,TH)
6
1-233-546-21 ENCAPSULATED COMPONENT
(EXCEPT AUS,TH)
* 7
1-666-070-11 AMP-A BOARD
* 8
4-991-362-01 PANEL (WH3), BACK (E)
* 8
4-991-362-11 PANEL (WH3), BACK (MY,SP)
* 8
4-991-362-21 PANEL (WH3), BACK (HK)
* 8
4-991-362-31 PANEL (WH3), BACK (AUS)
* 8
4-991-362-41 PANEL (WH3), BACK (TH)
* 8
4-991-362-51 PANEL (WH3), BACK (EA)
* 9
A-4398-455-A MAIN BOARD, COMPLETE (EXCEPT AUS,TH)
* 9
A-4398-456-A MAIN BOARD, COMPLETE (AUS)
* 9
A-4403-208-A MAIN BOARD, COMPLETE (TH)
10
4-970-381-11 FOOT (REAR)
* 11
3-703-244-00 BUSHING (2104), CORD (EXCEPT TH)
11
3-703-571-11 BUSHING (S) (4516), CORD (TH)
! 12
1-690-608-11 CORD, POWER (AUS)
! 12
1-751-326-31 CORD, POWER (TH)
! 12
1-777-071-21 CORD, POWER (EA,HK,MY,SP)
! 12
1-782-315-11 CORD, POWER (E)
! 13
1-569-007-11 ADAPTOR, CONVERSION 2P (E)
! 13
1-569-008-21 ADAPTOR, CONVERSION 2P (EA,MY,SP)
! 13
1-770-019-11 ADAPTOR, CONVERSION PLUG 3P (HK)
14
4-956-370-12 BAND, PLUG FIXED (HK,AUS)
15
4-977-358-11 CUSHION (8X12.5)
16
4-970-385-41 ORNAMENT (FOOT)
* 17
A-4398-997-A SUPPLY POWER BOARD, COMPLETE
* 18
1-666-071-11 SUR BOARD
* 19
3-378-760-01 CUSHION, FIBER
M601
1-698-792-11 FAN, DC
! T901
1-431-363-11 TRANSFORMER, POWER
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
9
18
6
14
8
5
7
11
3
17
1
10
15
16
16
15
1
2
#1
#2
#2
#2
not
supplied
supplied
#3
#3
not supplied
T901
#4 #4
#4
M601
#3
#3
#3
#5
#5
4
12
13
12
AUS MODEL
EA, MY, SP, HK MODEL
12
13
E, TH MODEL
E MODEL
EA, MY, SP,
MODEL
MODEL
13
HK MODEL
— 34 —
4-2.
PANEL SECTION
51
4-991-318-01 KNOB (VOL)
52
4-991-324-01 KNOB (MIC)
53
4-991-317-01 KNOB (JOG)
55
X-4948-613-1 PANEL ASSY, FRONT
56
4-962-708-11 EMBLEM (4-A), SONY
57
X-4948-612-1 DISPLAY ASSY, BUTTON
* 58
4-932-810-11 CUSHION (FL)
* 59
4-986-870-01 HOLDER, FL TUBE
* 60
1-666-060-11 AVIN BOARD
* 61
1-666-062-11 JOG BOARD
62
X-4948-611-1 BUTTON (E/N) ASSY
63
4-984-085-01 SPRING (ENTER), COMPRESSION
* 64
A-4398-467-A PANEL BOARD, COMPLETE (EXCEPT AUS,TH)
* 64
A-4398-468-A PANEL BOARD, COMPLETE (AUS)
* 64
A-4403-218-A PANEL BOARD, COMPLETE (TH)
65
4-951-620-01 SCREW (2.6X8), +BVTP
* 66
1-666-057-11 MIC ECHO BOARD
FL501
1-517-618-11 INDICATOR TUBE, FLUORESCENT
66
57
65
65
64
61
62
63
60
58
59
58
55
56
53
51
52
FL501
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
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